Window-screen



(No Model.) 2 sheetssheet 1. P. AHLBERG.

WINDOW SCREEN.

110.419,398. Patented Jan. 14, 1890.

fvmao @www (No Model.)

2Sl1eets-Sheet 2 P. AHLBBRG.

` l WINDOW SCREEN. No. 419,398.

Patented Jan. l4, 1890.

gnou/woz We L Y larly illustrated in the y ings, in which- "2o ythe frame on the line xm, Fig. l.

UNITED STATES VPATENT Orricr:e

PETER AHLBERG, OF DETROIT, MICHIGAN I wlNDow-scREI-m.

SPECIFICATION forming part of Letters Patent No. 419,398, dated January 14, 1890.-

Applieation led May 18, 1889. Serial No. 311,228. (No model.)

tains to make and use the same, reference being had to the accompanying drawings, which form a part of'this specification.

My invention relates to certain new and useful improvements in window -screens; and it consists of the combinations of devices and appliances hereinafter speciiied, and pointed out in the claims, and more particuaccompanying drawl Figure 1 is a view in perspective illustrating my invention. Fig. 2 is a vertical secv:tion showing my improved screen in place. Fig. 3 is a horizontal section through a window-frame, showing the position of the screen in plan. Fig. 4 is a horizontal section through Fig. 5 is an enlarged view of one end of the same. Fig. 6 is a separate view of ythe upper end of one of the wings, showing'the rod enga-ged therewith. Fig. 7 is a separate view of the lower end of one of the wings, also showing the rod engaged therewith.

I carry out my invention as follows:

A represents any ordinary screen frame provided with screen fabric B, engaged therewith in any suitable manner, the said frame and fabric constituting a permanent foursided frame. t

The object of my invention is more particularly to make an adjustable screen, which I accomplish by providing the screen A B, as above described, with wings made adjustable laterally in a novel and eflicient manner.

To this end C and C represent wings engaged, as hereinafter explained, with the sides of the frame A, so 'as to be adjusted to or from the frame A, to adapt the screen to window-frames of different widths.

D represents the window-frame provided with the usual parting-strip d.

D is the sash,constructed, as is customary, with a beveled base, as shown at D2.

' tionary.

Engaged upon the upper and lower sides of the frame A, I provide suitable 'cross-bars E E', recessed at their respective extremities, as shown at e e', sufficient to receive a stationary or immovable rod, as shown at F, and a spring F', a rod and a spring being engaged in each recess, making four independent springs and rods. The springs are preferably coiled springs surrounding the respective rods. The

t rods are permanently engaged in the recesses in any suitable manner-as, for instance, each may be constructed with a shoulder f at the rear embedded in the adjacent side of the cross-bar. This construction and arrangement fixes the rod in place and renders it sta- The outer extremities of said rods F have a movable engagement with the adjacent wings in any desired manner. As herewith shown the wings are constructed near each en'd with a recess c, adapted to receive the outward end of one of the rods and allow the wing to be moved to and fro upon the outer ends of the adjacent rods, the recesses extending laterally across the wing to give all necessary play. To prevent the disengagement of the wings with the said rods, the outer extremities ofthe rods may be turned to form a shoulder f and a cap Cprovided with an elongated slot c', be suitably fastened upon the wing over the respective recesses therein. The upturned extremity f of the rod is engaged in the slot c of the cap or plate C2, and thus the wing is effectually prevented from any liability of displacement or disengagement from the rod. The cross-bars E E intermediate the recesses, at their respective ends, may be left solid. The inner ends of the rods as so constructed may readily be driven into engagement with the bar by a blow of a hammer, and when the bar is united to the frame A there is no liability of the rod becoming disengaged.

I prefer to bend the rods, made preferably of metal, as shown at f2, so as to run straight through the middle of the recess to their connection with the wings. It will thus be seen that the rod is stationary with respect to the frame A and its adjacent cross-bar, while the wing has a sliding or movable engagement with the rods. The springs serve to force outward the wings into position against the adjacent window-frame. As each spring acts independently, should the window-frame be out of plumb the Wing will readily adapt itself thereto, as the spring at the top or bottom of the wing will force'the wing against the frame whether the frame be exactly vertical or not. The wing can thus be canted, as circumstances may require, to insure a tight fit. This union of the wings with the stationary rods and the fixed connection of the rods with the cross-bars or adjacent frame is very simple and economical and not likely to get out of order.

I prefer tolocate my adjustable screen outside the parting-strips, the wings fitting in against the frame of the windon'foutside4 said strips, as shown in Figs. 2 and 3. The crossbar E may be of a thickness suiiicient to close upsnugly against the lower part of the sash when `the sash is raised into proper position?,

To make the wings insecteproof where -they project laterally beyond the extremities of `the cross-bars, I provide the wings at their upperfends with blocks c2 c3, located so as to slide underneath "the cross-bars asthe wings are adjusted to and fro. I-design', however, to make theseV blocks c2 c3 not only serve to 'I make the screen insect-tight, but also to uphold "and support the window-sash. vFor this purff "pose the'blocks are made of sufiicient thickness to projectunderneath the sash when in placd, so that the sash may rest upon said blocks.

"Ihiswill be especially convenient where the p screen'is required to be used with old-fashil" ionedl windows or windowswithout cords aug weights. f InA many old-fashioned windows having stops at intervals upon the sides,

should the stops not come in proper position to support the sash relative to the screen, it

would make no dilference, as the sash may 'thus be supported by the screen tselfupor'i the said blocks.

"the blocks more eifectually upon the vertical wings, I prefer to recess the wings to receive the blocks, as indicated, for instance, at By locating thc metal plates C2 upon the same side asthe blocks,as"shown in the drawings',

the 'recesses c and c4 may communicate, and

"so be formed with the same tool byone and bevel of the lower face close fit. t In locating the screen in place in the window-frame I prefer, when properly adjusted,

the same operation. I design to bevel the upper edges of the blocks to conform to the of the sash to make a' tweensaid cross-bars and' the frame, wings To impart the strain upon `supporting-blocks.A The adjacent edges of the sash and supporting-blocks being beveled, -the resting of the sash upon the blocks will tend to draw the screen inward snug against the sash and parting-strips to make it insectproof; It will be seenthat the blocks are not liable to be torn off, as the weight of the window is' thus thrown upon the upright wings. In raising the window the top of the screen may readily be pulled inwardto supportwthe window thereupon 'in the .manner described. So in closing the window itis unnecessary to `remove the screen, v-as its upperVV end .may readily be pushed outward.. I do4 `notlimit myself `to making the plates C2 ofmetalif plates of that description are employedn` As the cross-hars E E'.are not required to be grooved, as in some other devices of this class, said bars are madestronger. f 2

I contemplate as coming within the scope of my invention to employ` the adjustable wings with or without the springs, as maybe preferred.

What I claim as my invention isl. In ascreen, the. combination, with a frame and a fabric thereto attached, `of thc cross-bars securedto the topandbottom of said frame, the stationary rods secured ibe- 9o having recesses into which the said rods are located with their freeends, and `plates.1p1'o vided with slots for engaging the ends of said rods, for thepurpose set forth, ther said plates covering said recesses.' i f 1 2, In a screen, Vthe combination, with a frame having fabric thereto attached, 'of the stationary rods, thewings having laterally adjustable engagementwith said rrods' and provided with the recessesc, and rests to sup- 10o port the Window-sash securedk-inV said recesses, substantially as set forth.

In testimony whereof I sign this spccifica. tion in the presence of two witnesses.` f PETER AII-LBERG.

Vitnesses:

N. S. WRIGHT, CHAs. F. SALovv. 

